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01-16 6.6L Duramax Wagler Dual Valve Spring Kit

Upgrade the valvetrain in your 2001-2016 GM 6.6L Duramax engine with the Wagler WCPC6643 Dual Valve Spring Kit With Steel Retainers. Designed to work with your factory spring shim, the dual valve spring kit increases seat pressure to 145lbs at 1.650 installed height.  


  •  130lb seat pressure at 1.720 (to the top of the retainer) installed height
  • 130lb seat pressure at 1.620 (to the top of the retainer) installed height
  •  Coil bind at 1.010
  • Works with factory spring shim and locks
  • Comes with steel retainers
  • Rated to handle 5000 rpms
  • We recommend using WCPC6664 Push Rods with them


Part Number: WCPC6643

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Tags: 6.6 , Duramax , Wagler , Dual , Valve , Spring , Kit